1. The rate of growth was unprecedented . 这个成长率是前所未有的。
2. A historic and unprecedented event occurred. The question of whether or not we are alone in the universe has been answered. 一个前所未有的历史性的事件发生了。宇宙中是否只有我们生存的问题已经有答案了。
3. This unique model combines the qualities of a luxury saloon and a high-performance sports car in one, raising this superiority to a new, unprecedented level. 这种独特的模式结合在一个豪华轿车和高性能跑车的特质，这种优势提高到一个新的，前所未有的水平。
